NPPES file of Aug 9, 2026

Katherine R. Stevenson, M.D.

Obstetrics & Gynecology Physician · Waukesha, WI

Katherine R. Stevenson, M.D. is an obstetrics & gynecology physician with a practice address in Waukesha, Wisconsin, and NPI 1447223037, issued on Feb 13, 2006. Check the license (Wisconsin 38174, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1447223037
Name
Katherine R. Stevenson
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
38174 WI
Self-reported in NPPES; status is on the state search
Practice location
725 American Ave FL 3, Waukesha, WI 53188
Phone
(262) 928-2594
Enumerated
Feb 13, 2006
Record last updated
Feb 2, 2017 (not updated in 9 years: call before relying on the address or phone)
Medicaid ID
32283900 WI
Medicare enrollment
Enrolled (PECOS I20051103000632); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 1989
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 725 American Ave FL 3

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sharon De Vries, P.A.Physician Assistant1972528677
  2. Renee Martin, APNPNurse Practitioner1528570603

Verify Katherine R. Stevenson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 38174
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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8.2 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024

1,350 Medicare Part D claims for 457 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims. 31 claims were for opioids.

  1. Katherine Stevenson1,350
  2. Specialty average165

Most prescribed

  1. Myrbetriq314 claims
  2. Nitrofurantoin Mono-Macro217 claims
  3. Estradiol179 claims
  4. Methenamine Hippurate82 claims
  5. Cephalexin68 claims
  6. Trospium Chloride42 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $314.37

3 payments; by number, the most common kind was food and beverage; the largest payer was Bluewind Medical. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katherine Stevenson$314.37
  2. Specialty average$1,030.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Prohealth Medical Group IncBrookfield, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katherine R. Stevenson among 796 obstetrics & gynecology physician records in Wisconsin

Katherine R. Stevenson, M.D. is one of 796 obstetrics & gynecology physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 47% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1989 · median 2007 among the 478 with a school on file
  • Record last updated2017 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

29 obstetrics & gynecology physician records list a practice address in Waukesha

They are 29 of the 2,814 NPPES records with a practice address in Waukesha, and 796 obstetrics & gynecology physician records in Wisconsin.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Dana Akiya, MDWaukesha, WI 531881407915796
  2. Beth Angsten, M.D.Waukesha, WI 531881174596217
  3. Joi Davis, DOWaukesha, WI 531881932172988
  4. Lorree Dyoco, MDWaukesha, WI 531881497728448
  5. Laura Epperson, MDWaukesha, WI 531881225028715
  6. Darin Gregory, MDWaukesha, WI 531881023189198
  7. Jessica Herzberg, MDWaukesha, WI 531881750570180
  8. Sarah Janz, M.D.Waukesha, WI 531881336367168

Common questions

What is Katherine R. Stevenson, M.D.'s NPI number?

Katherine R. Stevenson, M.D.'s National Provider Identifier (NPI) is 1447223037, issued on Feb 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Katherine R. Stevenson, M.D. located?

The NPPES record lists a practice address at 725 American Ave FL 3, Waukesha, WI, 53188. Phone: (262) 928-2594. Providers update this record themselves, so call before visiting.

How can I verify Katherine R. Stevenson, M.D.'s license?

NPPES lists Wisconsin license number 38174, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Katherine R. Stevenson, M.D. prescribe under Medicare Part D?

In 2024, Katherine R. Stevenson, M.D. had 1,350 Medicare Part D claims for 457 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.